Species alignment film and method, a display panel and a display device

The present invention provides seed alignment film and method, a display panel and a display device, belonging to the field of display technology, which can solve the conventional display panel can not eliminate the problem of an afterimage occurring when displayed. The alignment film of the present invention, the functional material after the occurrence of the alcoholysis reaction include polyimide capture monomer, the functional material can trap for generating ion impurities functional radical.